Engine and straddle type vehicle

(19)

(11)

EP 2 031 210 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	17.04.2013 Bulletin 2013/16

(43)	Date of publication A2:
	04.03.2009 Bulletin 2009/10

(21)	Application number: 08252876.1

(22)	Date of filing: 29.08.2008

(51)

International Patent Classification (IPC):

F16H 9/18^(2006.01)

F02B 61/02^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

(30)

Priority:

31.08.2007 JP 2007227088
03.12.2007 JP 2007312912
21.04.2008 JP 2008109854

(71)	Applicant: Yamaha Hatsudoki Kabushiki Kaisha
	Shizuoka-ken Shizuoka 438-8501 (JP)

(72)	Inventor:
	Nakayama, Yoshiharu Iwata-shi Shizuoka-ken 438-8501 (JP)

(74)	Representative: Moreland, David et al
	Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)

(54)	Engine and straddle type vehicle

(57) An engine of the invention includes a crankcase (20), which is configured to be dividable by a dividing surface (S1) intersecting an axial center of a crankshaft (40) and an axial center of a balancer shaft (47b). When the engine is mounted on a vehicle, the axial center of the balancer shaft (47b) is disposed between a first horizontal surface (S13) intersecting the axial center of the crankshaft (40) and a second horizontal surface (S12) intersecting a lower end of a crank web.

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